之前一直用NSUserDefaults在登錄的時候來保存用戶名和密碼，現(xiàn)在換成另外一種方式，記錄一下，以免以后用到能夠直接command+v
第一種方法--NSUserDefaults
創(chuàng)建一個繼承NSObject的類沦疾，在.h里面添加方法
+(void)saveUserName:(NSString *)userName;//保存用戶名
+(NSString *)getUserName;//獲取用戶名
+(void)savePassWD:(NSString *)passWD;//保存用戶密碼
+(NSString *)passWD;//獲取用戶密碼
在.m里面實現(xiàn)方法
//儲存用戶名
+(void)saveUserName:(NSString *)userName
{
NSUserDefaults *name = [NSUserDefaults standardUserDefaults];
[name setObject:userName forKey:@"userName"];
}
+(NSString *)getUserName
{
NSUserDefaults *name = [NSUserDefaults standardUserDefaults];
NSString *str = [name objectForKey:@"userName"];
return str;
}
//儲存用戶密碼
+(void)savePassWD:(NSString *)passWD
{
NSUserDefaults *passWord = [NSUserDefaults standardUserDefaults];
[passWord setObject:passWD forKey:@"passWord"];
}
+(NSString *)passWD
{
NSUserDefaults *passWord = [NSUserDefaults standardUserDefaults];
NSString *str = [passWord objectForKey:@"passWord"];
return str;
}
第二種方法--Keychain
創(chuàng)建一個繼承NSObject的類，在.h里面添加方法
導入頭文件 #import <Security/Security.h>
+(void)addKeychainData:(id)data forKey:(NSString *)key;//保存
+(id)getKeychainDataForKey:(NSString *)key;//獲取
+(void)deleteKeychainDataForKey:(NSString *)key;//刪除
在.m里面實現(xiàn)方法
+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
return [NSMutableDictionary dictionaryWithObjectsAndKeys:
(__bridge id)kSecClassGenericPassword,(id)kSecClass,// 標識符(kSecAttrGeneric通常值位密碼)
service, (__bridge id)kSecAttrService,// 服務(kSecAttrService)
service, (__bridge id)kSecAttrAccount,// 賬戶(kSecAttrAccount)
(__bridge id)kSecAttrAccessibleAfterFirstUnlock,(__bridge id)kSecAttrAccessible,// kSecAttrAccessiblein變量用來指定這個應用何時需要訪問這個數(shù)據(jù)
nil];
}
/**
儲存用戶賬號
*/
+(void)addKeychainData:(id)data forKey:(NSString *)key
{
// 獲取查詢字典
NSMutableDictionary *keychainQuery = [self getKeychainQuery:key];
// 在刪除之前先刪除舊數(shù)據(jù)
SecItemDelete((__bridge CFDictionaryRef)keychainQuery);
// 添加新的數(shù)據(jù)到字典
[keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(__bridge id)kSecValueData];
// 將數(shù)據(jù)字典添加到鑰匙串
SecItemAdd((__bridge CFDictionaryRef)keychainQuery, NULL);
}
+(id)getKeychainDataForKey:(NSString *)key
{
id ret = nil;
NSMutableDictionary *keychainQuery = [self getKeychainQuery:key];
[keychainQuery setObject:(id)kCFBooleanTrue forKey:(__bridge id)kSecReturnData];
[keychainQuery setObject:(__bridge id)kSecMatchLimitOne forKey:(__bridge id)kSecMatchLimit];
CFDataRef keyData = NULL;
if (SecItemCopyMatching((__bridge CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
@try {
ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge NSData *)keyData];
} @catch (NSException *e) {
NSLog(@"Unarchive of %@ failed: %@",key,e);
} @finally {
}
}
if (keyData) {
CFRelease(keyData);
}
return ret;
}
+(void)deleteKeychainDataForKey:(NSString *)key
{
NSMutableDictionary *keychainQuery = [self getKeychainQuery:key];
SecItemDelete((__bridge CFDictionaryRef)keychainQuery);
}
以后開發(fā)中用到的小tool第队，都會依次更新到簡書上哮塞，，歡迎大家給出更好的意見凳谦！
